dspic33fj16gs404t-i-pt Microchip Technology Inc., dspic33fj16gs404t-i-pt Datasheet - Page 32

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dspic33fj16gs404t-i-pt

Manufacturer Part Number
dspic33fj16gs404t-i-pt
Description
High-performance, 16-bit Digital Signal Controllers
Manufacturer
Microchip Technology Inc.
Datasheet
dsPIC33FJ06GS101/X02 and dsPIC33FJ16GSX02/X04
3.3
The dsPIC33FJ06GS101/X02 and dsPIC33FJ16GSX02/
X04 features a 17-bit by 17-bit single-cycle multiplier that
is shared by both the MCU ALU and DSP engine. The
multiplier can perform signed, unsigned and mixed sign
multiplication. Using a 17-bit by 17-bit multiplier for 16-bit
by 16-bit multiplication not only allows you to perform
mixed sign multiplication, it also achieves accurate
results for special operations, such as (-1.0) x (-1.0).
FIGURE 3-1:
DS70318D-page 30
Control Block
Data Access
PSV & Table
Program Memory
Special MCU Features
Address Latch
Data Latch
23
23
Controller
Interrupt
dsPIC33FJ06GS101/X02 and dsPIC33FJ16GSX02/X04 CPU CORE
BLOCK DIAGRAM
23
to Various Blocks
Control Signals
Control
Instruction
Stack
Logic
PCU
Decode &
Program Counter
Control
24
8
PCH
Control
Logic
Loop
16
PCL
Preliminary
Divide Support
DSP Engine
16
Y Data Bus
X Data Bus
Instruction Reg
Data Latch
ROM Latch
Address Generator Units
Address
X RAM
Latch
The dsPIC33FJ06GS101/X02 and dsPIC33FJ16GSX02/
X04 supports 16/16 and 32/16 divide operations, both
fractional and integer. All divide instructions are iterative
operations. They must be executed within a REPEAT
loop, resulting in a total execution time of 19 instruction
cycles. The divide operation can be interrupted during
any of those 19 cycles without loss of data.
A 40-bit barrel shifter is used to perform up to a 16-bit
left or right shift in a single cycle. The barrel shifter can
be used by both MCU and DSP instructions.
16
16
Data Latch
W Register Array
Address
Y RAM
Latch
EA MUX
16 x 16
16
16
16
16-Bit ALU
16
16
© 2009 Microchip Technology Inc.
16
16
To Peripheral Modules
16

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